/* ==========================================================================
   Catatan Tekanan Darah / Blood Pressure Log
   Designed for older adults: large type, high contrast, big tap targets.
   ========================================================================== */

:root {
  --bg:        #eef2f7;
  --surface:   #ffffff;
  --surface-2: #f6f8fb;
  --text:      #101720;
  --text-soft: #4d5a68;
  --border:    #cdd7e2;
  --border-strong: #9fb0c2;

  --primary:      #0a5aa8;
  --primary-dark: #084a8c;
  --primary-soft: #e3eefa;
  --on-primary:   #ffffff;

  --low:       #0a5ea8;
  --low-bg:    #dceaf9;
  --normal:    #12703a;
  --normal-bg: #dcf1e4;
  --high:      #a4231c;
  --high-bg:   #fbe1df;

  --danger:      #a4231c;
  --danger-soft: #fbe1df;

  --radius:    14px;
  --radius-sm: 10px;
  --shadow:    0 1px 2px rgba(16, 23, 32, .06), 0 4px 14px rgba(16, 23, 32, .07);
  --tap:       54px;

  --font: "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #10151c;
    --surface:   #1a212b;
    --surface-2: #222b37;
    --text:      #f0f4f8;
    --text-soft: #aebbc9;
    --border:    #33404f;
    --border-strong: #4d5f73;

    --primary:      #5aa9f0;
    --primary-dark: #7cbdf5;
    --primary-soft: #16324e;
    --on-primary:   #06101c;

    --low:       #7cbdf5;
    --low-bg:    #14304c;
    --normal:    #62d295;
    --normal-bg: #123425;
    --high:      #ff8f86;
    --high-bg:   #45191a;

    --danger:      #ff8f86;
    --danger-soft: #45191a;

    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 14px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 900px) { body { font-size: 19px; } }

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: 1.7rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }
p  { margin: 0 0 1em; }
a  { color: var(--primary); }

/* Everything interactive gets a clearly visible focus ring. */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- layout ---------- */

.page { max-width: 1040px; margin: 0 auto; padding: 0 16px 96px; }
.page--narrow { max-width: 640px; }

.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar__inner {
  max-width: 1040px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; margin-right: auto; }
.brand__mark {
  width: 38px; height: 38px; flex: none; border-radius: 11px;
  background: var(--primary); color: var(--on-primary);
  display: grid; place-items: center; font-size: 1.15rem;
}
.brand__sub { display: block; font-weight: 400; font-size: .78rem; color: var(--text-soft); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 18px;
}
.card__head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.card__head h2 { margin: 0; }
.card__head .spacer { margin-left: auto; }

.stack > * + * { margin-top: 14px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.grid-2 { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .grid-2 { grid-template-columns: 1fr 1fr; } }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--tap); padding: 12px 20px;
  font: inherit; font-weight: 600; font-size: 1rem;
  color: var(--text); background: var(--surface);
  border: 2px solid var(--border-strong); border-radius: var(--radius-sm);
  cursor: pointer; text-decoration: none;
  transition: background .12s ease, border-color .12s ease, transform .05s ease;
}
.btn:hover  { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.btn--primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.btn--primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }

.btn--danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn--danger:hover { background: var(--danger-soft); }

.btn--ghost { border-color: transparent; background: transparent; }
.btn--ghost:hover { background: var(--surface-2); }

.btn--big   { min-height: 66px; font-size: 1.2rem; padding: 14px 26px; width: 100%; }
.btn--small { min-height: 42px; padding: 8px 14px; font-size: .92rem; }
.btn--block { width: 100%; }

.lang-switch { display: inline-flex; border: 2px solid var(--border-strong); border-radius: var(--radius-sm); overflow: hidden; }
.lang-switch button {
  font: inherit; font-weight: 600; font-size: .92rem;
  padding: 9px 14px; min-height: 44px;
  background: var(--surface); color: var(--text); border: 0; cursor: pointer;
}
.lang-switch button[aria-pressed="true"] { background: var(--primary); color: var(--on-primary); }

/* ---------- forms ---------- */

.field { display: block; margin-bottom: 14px; }
.field > .label {
  display: block; font-weight: 600; margin-bottom: 6px; font-size: .98rem;
}
.field .hint { display: block; font-weight: 400; color: var(--text-soft); font-size: .85rem; }

input[type="text"], input[type="password"], input[type="number"],
input[type="date"], input[type="time"], input[type="search"], select, textarea {
  width: 100%; font: inherit; color: var(--text);
  background: var(--surface); padding: 12px 14px; min-height: var(--tap);
  border: 2px solid var(--border-strong); border-radius: var(--radius-sm);
}
input:disabled { background: var(--surface-2); color: var(--text-soft); }
textarea { min-height: 90px; resize: vertical; }

.checkbox { display: flex; align-items: center; gap: 12px; cursor: pointer; min-height: var(--tap); font-weight: 600; }
.checkbox input { width: 26px; height: 26px; accent-color: var(--primary); flex: none; }

/* ---------- messages ---------- */

.msg { padding: 13px 16px; border-radius: var(--radius-sm); font-weight: 600; margin-bottom: 14px; border: 2px solid transparent; }
.msg--error   { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.msg--success { background: var(--normal-bg); color: var(--normal); border-color: var(--normal); }
.msg--info    { background: var(--primary-soft); color: var(--primary); border-color: var(--primary); }
.msg[hidden]  { display: none; }

.muted  { color: var(--text-soft); }
.small  { font-size: .88rem; }
.center { text-align: center; }

/* ---------- tabs ---------- */

.tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 18px; -webkit-overflow-scrolling: touch; }
.tabs button {
  font: inherit; font-weight: 600; white-space: nowrap;
  padding: 12px 18px; min-height: var(--tap);
  background: var(--surface); color: var(--text);
  border: 2px solid var(--border); border-radius: var(--radius-sm); cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }

.tabpanel[hidden] { display: none; }

/* ---------- readings table ---------- */

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); }
thead th { background: var(--surface-2); font-size: .88rem; text-transform: uppercase; letter-spacing: .03em; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td.num { font-size: 1.25rem; font-weight: 700; text-align: right; white-space: nowrap; }
td.when { white-space: nowrap; }
td.when .date { font-weight: 600; display: block; }
td.when .time { color: var(--text-soft); font-size: .88rem; }

/* Highlight colours driven by each user's own limits. */
.v-low    { color: var(--low);    background: var(--low-bg); }
.v-high   { color: var(--high);   background: var(--high-bg); }
.v-normal { color: var(--text); }

.pill { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: .85rem; font-weight: 700; }
.pill--low    { background: var(--low-bg);    color: var(--low); }
.pill--normal { background: var(--normal-bg); color: var(--normal); }
.pill--high   { background: var(--high-bg);   color: var(--high); }

.legend { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; font-size: .92rem; }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 20px; height: 20px; border-radius: 6px; display: inline-block; border: 1px solid var(--border); }

/* ---------- stats ---------- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.stat { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; }
.stat__label { font-size: .85rem; color: var(--text-soft); font-weight: 600; }
.stat__value { font-size: 1.7rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat__sub { font-size: .82rem; color: var(--text-soft); }

/* ---------- quick entry ---------- */

.entry-shell { max-width: 520px; margin: 0 auto; padding: 12px 14px 40px; }

.entry-fields { display: grid; gap: 10px; margin-bottom: 8px; }

.numbox {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px;
  width: 100%; text-align: left; font: inherit;
  padding: 12px 16px; min-height: 84px;
  background: var(--surface); color: var(--text);
  border: 3px solid var(--border-strong); border-radius: var(--radius); cursor: pointer;
}
.numbox[aria-pressed="true"] { border-color: var(--primary); background: var(--primary-soft); }
.numbox__label { font-weight: 700; font-size: 1.05rem; }
.numbox__hint  { display: block; font-weight: 400; font-size: .82rem; color: var(--text-soft); }
.numbox__value {
  font-size: 2.6rem; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums;
  min-width: 3.4ch; text-align: right;
}
.numbox__value.is-empty { color: var(--border-strong); }
.numbox__unit { font-size: .8rem; color: var(--text-soft); display: block; text-align: right; font-weight: 600; }

.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 14px 0; }
.keypad button {
  font: inherit; font-size: 2rem; font-weight: 700;
  min-height: 72px; border-radius: var(--radius);
  background: var(--surface); color: var(--text);
  border: 2px solid var(--border-strong); cursor: pointer;
  font-variant-numeric: tabular-nums;
}
.keypad button:active { background: var(--primary-soft); transform: translateY(1px); }
.keypad button.key--action { font-size: 1.05rem; font-weight: 700; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font: inherit; font-size: .95rem; font-weight: 600;
  padding: 10px 16px; min-height: 46px;
  background: var(--surface); color: var(--text);
  border: 2px solid var(--border-strong); border-radius: 999px; cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }

.entry-done { text-align: center; padding: 24px 8px; }
.entry-done__mark {
  width: 96px; height: 96px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--normal-bg); color: var(--normal);
  display: grid; place-items: center; font-size: 3rem; font-weight: 700;
}
.entry-done__value { font-size: 3rem; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1.1; }

/* ---------- QR ---------- */

.qr-card { text-align: center; }
.qr-card img {
  width: 100%; max-width: 260px; height: auto; display: block; margin: 0 auto 12px;
  background: #fff; padding: 10px; border-radius: var(--radius-sm); border: 1px solid var(--border);
}
.link-box {
  display: flex; gap: 8px; align-items: center;
  background: var(--surface-2); border: 2px solid var(--border);
  border-radius: var(--radius-sm); padding: 6px 6px 6px 14px;
}
.link-box code {
  flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap;
  font-size: .9rem; padding: 6px 0;
}

/* API keys: one row per key, stacking on a narrow phone. */
.key-list { list-style: none; margin: 14px 0 0; padding: 0; }
.key-item {
  display: flex; gap: 10px; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  border-top: 2px solid var(--border); padding: 12px 0;
}
.key-item__text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.key-item__text span { word-break: break-all; }

/* ---------- modal ---------- */

.modal[hidden] { display: none; }
.modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(8, 14, 22, .6);
  display: grid; place-items: center; padding: 16px;
  overflow-y: auto;
}
.modal__box {
  background: var(--surface); border-radius: var(--radius);
  padding: 22px; width: 100%; max-width: 560px; box-shadow: var(--shadow);
  max-height: 92vh; overflow-y: auto;
}

/* ---------- misc ---------- */

.empty { padding: 34px 16px; text-align: center; color: var(--text-soft); }
.spinner { padding: 26px; text-align: center; color: var(--text-soft); font-weight: 600; }
.list-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 14px 22px; border-radius: 999px; font-weight: 600;
  box-shadow: var(--shadow); z-index: 80; max-width: 92vw; text-align: center;
}
.toast[hidden] { display: none; }

/* ---------- print ---------- */

@media print {
  :root { --bg: #fff; --surface: #fff; --shadow: none; }
  body { background: #fff; font-size: 12pt; }
  .no-print, .topbar, .tabs, .btn { display: none !important; }
  .card { border: 1px solid #999; box-shadow: none; break-inside: avoid; margin-bottom: 10px; }
  .page { padding: 0; max-width: none; }
  .v-low, .v-high, .pill { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  thead { display: table-header-group; }
  tr { break-inside: avoid; }
}

/* ==========================================================================
   Utilities — the Content-Security-Policy forbids inline style attributes,
   so every layout tweak lives here as a class.
   ========================================================================== */

.m-0   { margin: 0; }
.mb-0  { margin-bottom: 0; }
.mb-xs { margin-bottom: 4px; }
.mb-1  { margin-bottom: 6px; }
.mb-2  { margin-bottom: 8px; }
.mb-3  { margin-bottom: 12px; }
.mb-4  { margin-bottom: 14px; }
.mb-5  { margin-bottom: 16px; }
.mb-6  { margin-bottom: 18px; }
.ml-2  { margin-left: 8px; }
.mt-1  { margin-top: 6px; }
.mt-2  { margin-top: 10px; }
.mt-3  { margin-top: 12px; }
.mt-4  { margin-top: 14px; }
.mt-5  { margin-top: 18px; }
.mt-6  { margin-top: 22px; }
.pt-4  { padding-top: 28px; }
.pt-6  { padding-top: 60px; }

.pad-tight { padding: 14px; }
.text-md   { font-size: 1.05rem; }
.grow      { flex: 1; min-width: 200px; }

.row--between { justify-content: space-between; }
.row--center  { justify-content: center; }
.row--end     { align-items: flex-end; }

.divider { border: 0; border-top: 1px solid var(--border); margin: 20px 0; }

/* Legend swatches. */
.sw--low    { background: var(--low-bg);    border-color: var(--low); }
.sw--normal { background: var(--normal-bg); border-color: var(--normal); }
.sw--high   { background: var(--high-bg);   border-color: var(--high); }

/* Off-screen textarea used by the clipboard fallback. */
.offscreen { position: fixed; top: 0; left: -9999px; opacity: 0; pointer-events: none; }